Swan neck deformity (fingers)
Last revised by Leonardo Lustosa ◉ on 21 Jun 2022
Citation, DOI, disclosures and article data
Citation:
Niknejad M, Lustosa L, Bell D, et al. Swan neck deformity (fingers). Reference article, Radiopaedia.org (Accessed on 26 Sep 2023) https://doi.org/10.53347/rID-21572
Permalink:
rID:
21572
Article created:
31 Jan 2013, Mohammadtaghi Niknejad ◉
Disclosures:
At the time the article was created Mohammadtaghi Niknejad had no recorded disclosures.
View Mohammadtaghi Niknejad's current disclosuresLast revised:
21 Jun 2022, Leonardo Lustosa ◉
Disclosures:
At the time the article was last revised Leonardo Lustosa had no recorded disclosures.
View Leonardo Lustosa's current disclosuresRevisions:
20 times, by 14 contributors - see full revision history and disclosures
Systems:
Synonyms:
- Swan neck type deformity
Swan neck deformity is a musculoskeletal manifestation of rheumatoid arthritis presenting in a digit of the hand, due to the combination of:
- hyperextension of a proximal interphalangeal (PIP) joint
- flexion of a distal interphalangeal (DIP) joint
Pathology
The swan neck deformity, characterized by hyperextension of the PIP and flexion of the DIP joints, is due to an imbalance of muscle forces 6.
Etiology
Swan neck deformity may present in 3,4:
- rheumatological disease
- rheumatoid arthritis (classical association)
- scleroderma
- psoriatic arthritis
- systemic lupus erythematosus arthropathy
- neurological
- stroke
- cerebral palsy
- brain injury
- post-traumatic: post mallet finger injury
See also
Quiz questions
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References
- 1. Longo D, Fauci AS, Kasper D et-al. Harrison's Principles of Internal Medicine. McGraw-Hill Professional Pub. (2011) ISBN:007174889X. Read it at Google Books - Find it at Amazon
- 2. Weissleder R, Wittenberg J, Harisinghani MG. Primer of diagnostic imaging. Mosby Inc. (2007) ISBN:0323040683. Read it at Google Books - Find it at Amazon
- 3. Fundamentals of Hand Therapy. Mosby. ISBN:0323033865. Read it at Google Books - Find it at Amazon
- 4. Ortiz D. Reeder and Felson's gamuts in radiology. Praeger. ISBN:0313312168. Read it at Google Books - Find it at Amazon
- 5. William Palmer, Laura Bancroft, Fiona Bonar, Jung-Ah Choi, Anne Cotten, James F. Griffith, Philip Robinson, Christian W.A. Pfirrmann. Glossary of terms for musculoskeletal radiology. (2020) Skeletal Radiology. doi:10.1007/s00256-020-03465-1 - Pubmed
- 6. Shiraishi M, Fukuda T, Igarashi T, Tokashiki T, Kayama R, Ojiri H. Differentiating Rheumatoid and Psoriatic Arthritis of the Hand: Multimodality Imaging Characteristics. (2020) RadioGraphics. 40 (5): 1339-1354. doi:10.1148/rg.2020200029 - Pubmed
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